I22 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
SPREAD OF FuNGUS DISEASES BY MEANS OF HYBERNATING 
MYcELIUM. 
The Journal of the Board of Agriculture for August 1906 
contains an article entitled “The Spread of Fungus Diseases by 
means of Hybernating Mycelium.” The gist of the article is 
that certain diseases may be communicated from the parent 
plant to the seedling through hybernating mycelium, which takes 
up its abode in the seed. Attention is also called to the fact 
that disease may be spread in vegetative propagation, such as 
by tubers and bulbs. The main interest in the article lies in the 
fact that, in certain plants, disease has been found to pass from 
one generation to another by infected seed, and entirely without 
the intervention of spores. The phenomenon appears as yet to 
have been observed only in the case of grasses, but whether or 
not this method of disease propagation holds good among trees 
is a matter for future investigation. A. We lee 
‘¢ SLIME-FLUX” ON BEECH TREES.1 
The disease known as “Slime-flux” is due to the activity of 
certain very minute yeast-like organisms, which set up fermenta- 
tion and subsequent dissolution of the elements of the wood and 
bark. This results in the formation of weeping wounds. If 
such wounded parts are removed at an early stage, the cavity 
treated with a fungicide, and afterwards carefully closed, but 
little injury follows. On the other hand, if the disease is allowed 
to run its course, the wood becomes sodden with water, and the 
tree eventually dies. 
BOTANICAL SURVEY OF SCOTLAND. 
The Scottish Geographical Magazine for May 1906 contains 
an article by M. Hardie, D.Sc., entitled “ Botanical Survey of 
Scotland.” The scientific and practical importance of such a 
Survey is first emphasised by the author, who then proceeds 
to outline the plan he has adopted to lay the foundations upon 
which a future detailed Botanical Survey may be built up. 
1 Reproduced from the Journal of the Board of Agriculture for June 1906, 
by permission of the Controller of His Majesty’s Stationery Office. 
